van der Waals attraction

van der Waals attraction

[′van dər ‚wȯlz ə‚trak·shən]
(physical chemistry)
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Among his topics are the origin of charge at interfaces and structure of the electrical double layer, Van der Waals attraction, the adsorption of surfactants at the liquid/liquid interface, polymers and polymeric surfactants and their association, and the flocculation of sterically stabilized dispersions.
2]v) (attraction number; combined influence of van der Waals attraction forces and fluid velocity on particle deposition by interception), and NG = ([P.
2] dispersion that takes into account three major components to the interaction between colloidal particles, namely van der Waals attraction, repulsion between polymer coating layers, and a hard-core particle repulsion.
However, van der Waals attraction is important only when the particles are not coated and can get in close contact with one another.
found that the divided points of contact served as a way to increase the van der Waals attraction between the toes and the surface of the gecko is climbing.
It is remarkable that in the fracture surface and behind it, the particles remained in contact during and after freeze-fracture: that is undeniable evidence of van der Waals attraction force and perhaps additional surface forces holding them together, because there is no sign of their being welded by coalescence.
The author has organized the main body of his text in thirteen chapters devoted to the structure of the electrical double layer and the origin of charge at interfaces, electrokinetic phenomena and zeta potential, Van der Waals attraction, and a wide variety of other related subjects.
The tubes may be drawn to the electrode by an electrical attraction, but they are held there by van der Waals attraction, a sort of molecular-level suction.
Unfortunately, GNPs are easy to agglomerate due to strong interplatelet van der Waals attractions and high surface energy, and hard to disperse in the composite.
Dorbolo and Vandewalle say they've conducted recent experiments that suggest that the antibubbles oppose van der Waals attractions with some counterforce, perhaps electrostatic repulsion, between detergent molecules that protrude into the air gap from the liquid on either side.
Usually, short-range forces originating from molecular forces, such as van der Waals attractions of the particle surfaces (47), are prevalent in dry particles and in polymeric systems.